On Wed, Feb 18, 2009 at 1:41 PM, tedd <tedd.sperl...@gmail.com> wrote:
> At 5:47 AM +0200 2/18/09, Ian wrote:
>>
>> Anyone had to deal with this in the past and does anyone have any
>> suggestions/ideas as to how I could better this setup?
>>
>> Many thanks in advance,
>> Ian
>
> Ian:
>
> As other people have said, using IP's are not really a good solution.
>
> If it was me, I would ask the user to submit their email address. Then my
> script would send them an email with a token for them to click. After they
> do that, they would be returned to my script and their email address would
> be confirmed.
>
> With a confirmed email address, they can vote -- they get only one vote per
> email address.
>
> Granted this is an involved method, but email addresses are unique and thus
> ensures one vote per email address.

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E-mail addresses are (somewhat unique -- not getting into aliases,
forwards, and such) e-mail delivery points, they are not a unique
index of PEOPLE. You point out below that a single person can have
multiple addresses. I also know several families where the entire
family shares one address.
> Now, this does not stop someone from getting several email address and
> voting several times, but it does slow down mass voting and you have a
> record of who voted.
>
> If you want to see how this works, try posting a comment on my web site
> under any of the web tips (http://sperling.com).
>
> Cheers,
>
> tedd
>
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